Playing together for the first time in Davis Cup, Kas and Petzschner broke at 4-4 in the fifth set on Karlovic's serve. A game earlier, Croatia missed its opportunity at 0-30 at Kas's serve.

In Sunday's reverse singles, Croatia's Marin Cilic faces Philipp Kohlschreiber and Dodig plays Florian Mayer. The winner of the best-of-five series next faces France or Austria. The French lead that series 2-1.